Answer:
1. They might have moved to find more food for their ever-growing population.
2. The peaceful Tainos might have moved to seek refuge from the Kalinagos.
3. Since they loved travelling by sea, they might have discovered some of those Islands by accident and thought them as suitable for habitation.
Step-by-step explanation:
The Amerindian were the earliest inhabitants of the Americas. These group of people consisted mainly of the Tainos, the Kalinagos, and the Mayans. The Kalinagos spoke Carib while the other groups spoke Arawak. The Amerindian groups were known to migrate from their South American native lands to the Caribbean in the time period that spanned the 1st to 7th centuries.
They might have moved to other territories because they wanted more food for their growing population, they wanted to seek refuge from aggressive groups, they saw some geographical locations as better for survival, or they just saw migration as a way of life.